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An active K/K/sub a/-band antenna array is under development for NASA's ACTS Mobile Terminal (AMT). The AMT active antenna array is a multilayered assembly in which a receive array of radiating slots and a transmit array of microstrip dipoles are interleaved such that they share the same aperture to provide a compact, dual-band antenna. The subarrays of the antenna are linear series-fed-type arrays consisting of nearly identical dipole, or slot, elements transversely electromagnetically coupled to a microstrip transmission line. The design and test results for both a dipole and a slot series-fed-type linear array, assuming the impedance characteristics of the radiating elements are known, are described. > |
